An American gun-maker has blended features of the U.S. AR-15-style rifle and the Russian AK-47 ... so it actually makes it a lot stronger," Novotny said of the bolt. ... butt stock, muzzle brake ...

Also familiar to AKs is the slant brake at the end of the muzzle. ... Because the bolt does not hold open itself, ... most historically accurate AK-47 then the RAS47 isn’t for you.